imovie community

After upgrading to Mojave 10.14.6, iMovie began to corrupt ALL menus, including the OS itself. On closing the iMovie app, all returns to normal. Here's a shot. Tried accessibility fix but it did nothing. Tried rebooting the OS. No go. VERY unhappy with Mojave in general, and this is a good example of the dozens of problems I've had. Is it the iMovie app itself, or possibly a corrupted support file? Is there a fix, or is iMovie just unusable for me now? Anyone got a clue?